Link that doesn't require a login (or contact harvesting)- <a href="https://www.researchgate.net/publication/325283380_Megastructures_Superweapons_and_Global_Architectures_in_Science_Fiction_Computer_Games" rel="nofollow">https://www.researchgate.net/publication/325283380_Megastruc...</a>
This is a terrible website. It gives you three different links/buttons to download the thing and wants you to sign in (e.g. with Google or Facebook) before granting access.